121022221002121 has 8 divisors (see below), whose sum is σ = 127391987172320. Its totient is φ = 114652472391072.

The previous prime is 121022221002113. The next prime is 121022221002143. The reversal of 121022221002121 is 121200122220121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121022221002121 - 2³ = 121022221002113 is a prime.

It is a super-2 number, since 2×121022221002121² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121022221032121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11172061 + ... + 19153573.

It is an arithmetic number, because the mean of its divisors is an integer number (15923998396540).

Almost surely, 2^{121022221002121} is an apocalyptic number.

It is an amenable number.

121022221002121 is a deficient number, since it is larger than the sum of its proper divisors (6369766170199).

121022221002121 is an equidigital number, since it uses as much as digits as its factorization.

121022221002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8779575.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121022221002121 its reverse (121200122220121), we get a palindrome (242222343222242).

The spelling of 121022221002121 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred twenty-one million, two thousand, one hundred twenty-one".